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Home >> Hyundai >> 2004 >> Accent Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P0502: Vehicle Speed Sensor "A" Circuit Low Input >> Ground Circuit Inspection
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Ground Circuit Inspection

The purpose of checking terminal 2 after disconnecting VSS connector is to check open or short circuit of ground.

  1. Ignition "OFF"
  2. Disconnect VSS sensor connector.
  3. 3 Ignition "ON" & Engine "OFF"
  4. Measure voltage or resistance between terminal 1 of sensor harness connector and chassis ground.

    Specification: below 0.5V or below 1Ω

    Fig 1: Measuring Resistance Between Terminal 1 Of Sensor Harness Connector And Chassis Ground
    G03851988Courtesy of HYUNDAI MOTOR CO.
  5. Is measure voltage or resistance within Specification?

    YES 

    NO